Company lists · Data refreshed November 2026
Top 25 Transformer oil testing services worldwide
RevenueBase identified 598 company matches for transformer oil testing services worldwide as of November 2026 and tracks 6,497 professional contacts across them, including 1,066 with verified work emails. The United States is the largest market and Vadodara the largest hub.
This list covers company matches for transformer oil testing services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 2, 2026. Country and city lists for transformer oil testing services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest transformer oil testing services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 508 contacts → | ||||
Exact match “Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 2 | 301 contacts → | ||||
Exact match “En VOLTRAN, nuestros equipos de Ingenieros y Técnicos, trabajan bajo los estándares más estrictos de calidad para diseñar, fabricar, reparar y poner en operación transformadores…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 3 | 219 contacts → | ||||
Exact match “SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 4 | 212 contacts → | ||||
Exact match “HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 5 | 161 contacts → | ||||
Exact match “FYR INGENIEROS es una empresa dedicada a la Fabricación de Transformadores Tipo Secos clase H, contamos con Laboratorios de Análisis de Aceites Dieléctricos, y de Ensayos…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 6 | 142 contacts → | ||||
Exact match “Emerald Transformer is the premier national single-source solution for oil-filled electrical equipment with services including repair, re-manufacturing, field technical services…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 7 | 113 contacts → | ||||
Exact match “BAUR is the world market leader of testing and measurement technology.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 8 | 107 contacts → | ||||
Exact match “Revive Electrical Transformers (Pty) Ltd was established in 1997 and has grown to be one of the largest transformer distribution manufacturers in Africa.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 9 | 90 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 10 | 82 contacts → | ||||
Exact match “Services Laboratory for - Oil Analysis - Mineral and Natural (Bio) Fuel - Grease - Industrial Hygiene Parameters - Environmental Parameters - Bio Monitoring - Transformer Oil…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 11 | 80 contacts → | ||||
Exact match “ESENNAR is one of the reputed Transformer manufacturers in India, with a comprehensive World class design and manufacturing facility in Hyderabad.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 12 | 74 contacts → | ||||
Exact match “Morgan Schaffer est un leader dans l’analyse de l’huile diélectrique et en instrumentation d’analyse de gaz dissouts (AGD), et ce depuis plus de 50 ans.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 13 | 70 contacts → | ||||
Exact match “Texas OilTech Laboratories, is committed to remaining a world-class petroleum testing laboratory for the analysis of fuels, lubricants, petrochemical, and environmental materials.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 14 | 62 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 15 | 57 contacts → | ||||
Exact match “For over 30 years, TelLab has been at the forefront of chemistry, research and innovation in Ireland, delivering expert solutions across a diverse range of scientific fields.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 16 | 55 contacts → | ||||
Exact match “STARK International is an industry leader in providing oil services for transformers, hydraulic and lubrication oils.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 17 | 55 contacts → | ||||
Exact match “Surplec offers a centralized service for the sale, purchase, repair, rental, and testing of medium- and high-voltage transformers and equipment.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 18 | 52 contacts → | ||||
Exact match “Specialtrasfo engineers and manufactures custom designed oil immersed special transformers for industrial and power applications.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 19 | 52 contacts → | ||||
Exact match “TJ|H2b Analytical Services is a full service laboratory that offers analytical testing and diagnostic evaluation of oil and gas insulated electrical equipment at our global lab…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 20 | 50 contacts → | ||||
Exact match “Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 21 | 47 contacts → | ||||
Exact match “Sea Marconi is a global leader in transformer lifecycle management with insulating fluids, delivering sustainable and innovative solutions.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 22 | 43 contacts → | ||||
Exact match “En LG SERVIS S.A.S.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 23 | 43 contacts → | ||||
Exact match “Fundada em 01/07/1997, a Brastrafo do Brasil é uma empresa nacional que nasceu com o propósito de atender o setor elétrico, em todos os seus segmentos (geração, transmissão…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 24 | 38 contacts → | ||||
Exact match “At PQM we provide oil/fuel testing, inspection and consulting services in the U.S.” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
| 25 | 37 contacts → | ||||
Exact match “Oilfield Labs of America is an analytical laboratory network with a business goal and mission of providing the highest quality analytical testing in the fastest time possible to…” Recorded in the RevenueBase company graph · Nov 2, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “transformer oil testing services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 598 transformer oil testing services worldwide
See the full list, filter by size, metro and specialty, and access 1,066 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Transformer oil testing services worldwide at a glance
As of Nov 2, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for transformer oil testing services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “transformer oil testing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,066 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 2, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Transformer oil testing services by location
2 lists · largest firstEvery Transformer oil testing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “transformer oil testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many transformer oil testing services are there worldwide?
RevenueBase identified 598 company matches for transformer oil testing services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Voltamp Transformers Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most transformer oil testing services?
The United States leads with 61 companies, followed by Brazil (49). Every transformer oil testing services list by country and city is linked on this page.
Which city has the most transformer oil testing services?
Vadodara leads with 13 company records, followed by Bangalore (9) and Mumbai (7).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,066 professional contacts with verified work emails tracked across these 598 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 2, 2026.
Ready to reach these companies? Verified emails and direct dials for all 598 transformer oil testing services worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 transformer oil testing services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 598 matching company records for transformer oil testing services worldwide, with 6,497 tracked contacts and 1,066 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 2, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transformer oil testing services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Voltamp Transformers Limitedvoltamptransformers.com HQ: Vadodara, IndiaReported employees: 501-1,000 | Vadodara, India | 501-1,000 | Exact match | 508 contacts → |
“Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Voltran Transformadores - Grupo WEGvoltran.com.mx HQ: Tizayuca, MexicoReported employees: 1,001-5,000 | Tizayuca, Mexico | 1,001-5,000 | Exact match | 301 contacts → |
“En VOLTRAN, nuestros equipos de Ingenieros y Técnicos, trabajan bajo los estándares más estrictos de calidad para diseñar, fabricar, reparar y poner en operación transformadores…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Sdmyerssdmyers.comHQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HD Hyundai Power Transformers Usa, INChhiamerica.com HQ: Montgomery, AL, United StatesReported employees: 201-500 | Montgomery, AL, United States | 201-500 | Exact match | 212 contacts → |
“HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FYR Ingenieros Ltdafyringenieros.com HQ: Bogota, ColombiaReported employees: 201-500 | Bogota, Colombia | 201-500 | Exact match | 161 contacts → |
“FYR INGENIEROS es una empresa dedicada a la Fabricación de Transformadores Tipo Secos clase H, contamos con Laboratorios de Análisis de Aceites Dieléctricos, y de Ensayos…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Emerald Transformeremeraldtransformer.com HQ: Mckinney, AZ, United StatesReported employees: 201-500 | Mckinney, AZ, United States | 201-500 | Exact match | 142 contacts → |
“Emerald Transformer is the premier national single-source solution for oil-filled electrical equipment with services including repair, re-manufacturing, field technical services…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Baur Gmbhbaur.eu HQ: Sulz, FranceReported employees: 51-200 | Sulz, France | 51-200 | Exact match | 113 contacts → |
“BAUR is the world market leader of testing and measurement technology.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Revive Electrical Transformersret.co.za HQ: Meyerton, South AfricaReported employees: 201-500 | Meyerton, South Africa | 201-500 | Exact match | 107 contacts → |
“Revive Electrical Transformers (Pty) Ltd was established in 1997 and has grown to be one of the largest transformer distribution manufacturers in Africa.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Lubrisider Chile S.Alubrisider.cl HQ: Santiago, ChileReported employees: 51-200 | Santiago, Chile | 51-200 | Exact match | 90 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Pt. Petrolab Servicespetrolab.co.id HQ: IndonesiaReported employees: 51-200 | Indonesia | 51-200 | Exact match | 82 contacts → |
“Services Laboratory for - Oil Analysis - Mineral and Natural (Bio) Fuel - Grease - Industrial Hygiene Parameters - Environmental Parameters - Bio Monitoring - Transformer Oil…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Esennar Transformersesennar.com HQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 80 contacts → |
“ESENNAR is one of the reputed Transformer manufacturers in India, with a comprehensive World class design and manufacturing facility in Hyderabad.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Morgan Schaffer Ltéemorganschaffer.com HQ: Lasalle, QC, CanadaReported employees: 51-200 | Lasalle, QC, Canada | 51-200 | Exact match | 74 contacts → |
“Morgan Schaffer est un leader dans l’analyse de l’huile diélectrique et en instrumentation d’analyse de gaz dissouts (AGD), et ce depuis plus de 50 ans.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Texas Oiltech Laboratoriestol-lp.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 70 contacts → |
“Texas OilTech Laboratories, is committed to remaining a world-class petroleum testing laboratory for the analysis of fuels, lubricants, petrochemical, and environmental materials.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Eurogulf Transformer FZEeurogulftransformers.com HQ: Sharjah, United Arab EmiratesReported employees: 51-200 | Sharjah, United Arab Emirates | 51-200 | Exact match | 62 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | T.E. Laboratories Tellabtellab.ie HQ: Tullow, IrelandReported employees: 51-200 | Tullow, Ireland | 51-200 | Exact match | 57 contacts → |
“For over 30 years, TelLab has been at the forefront of chemistry, research and innovation in Ireland, delivering expert solutions across a diverse range of scientific fields.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Stark Internationalstarkoil.com HQ: New Glasgow, NS, CanadaReported employees: 51-200 | New Glasgow, NS, Canada | 51-200 | Exact match | 55 contacts → |
“STARK International is an industry leader in providing oil services for transformers, hydraulic and lubrication oils.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Surplec, An IPS Companysurplec.com HQ: Sherbrooke, ON, CanadaReported employees: 51-200 | Sherbrooke, ON, Canada | 51-200 | Exact match | 55 contacts → |
“Surplec offers a centralized service for the sale, purchase, repair, rental, and testing of medium- and high-voltage transformers and equipment.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Specialtrasfo S.P.Aspecialtrasfo.com HQ: Agrate Brianza, ItalyReported employees: 51-200 | Agrate Brianza, Italy | 51-200 | Exact match | 52 contacts → |
“Specialtrasfo engineers and manufactures custom designed oil immersed special transformers for industrial and power applications.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | TJ H2b Analytical Servicestjh2b.com HQ: Sacramento, United StatesReported employees: 51-200 | Sacramento, United States | 51-200 | Exact match | 52 contacts → |
“TJ|H2b Analytical Services is a full service laboratory that offers analytical testing and diagnostic evaluation of oil and gas insulated electrical equipment at our global lab…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Monitramonitra.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | SEA Marconiseamarconi.com HQ: Collegno, ItalyReported employees: 51-200 | Collegno, Italy | 51-200 | Exact match | 47 contacts → |
“Sea Marconi is a global leader in transformer lifecycle management with insulating fluids, delivering sustainable and innovative solutions.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | LG Servis SASlgservis.net HQ: Bogotá Dc, ColombiaReported employees: 11-50 | Bogotá Dc, Colombia | 11-50 | Exact match | 43 contacts → |
“En LG SERVIS S.A.S.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Brastrafo DO Brasil Ltdabrastrafo.com.br HQ: Monte Mor, BrazilReported employees: 51-200 | Monte Mor, Brazil | 51-200 | Exact match | 43 contacts → |
“Fundada em 01/07/1997, a Brastrafo do Brasil é uma empresa nacional que nasceu com o propósito de atender o setor elétrico, em todos os seus segmentos (geração, transmissão…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Product Quality Management, LLCprodqual.com HQ: Pasadena, TX, United StatesReported employees: 51-200 | Pasadena, TX, United States | 51-200 | Exact match | 38 contacts → |
“At PQM we provide oil/fuel testing, inspection and consulting services in the U.S.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | OLAola-us.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 37 contacts → |
“Oilfield Labs of America is an analytical laboratory network with a business goal and mission of providing the highest quality analytical testing in the fastest time possible to…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 598 company matches
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Transformer oil testing services: dataset insights
November 2, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
585 records in the displayed employee bands.
13 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 598 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 2, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Transformer oil testing services by location
2 lists · largest firstEvery Transformer oil testing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for transformer oil testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transformer oil testing services did RevenueBase find worldwide?
The saved snapshot records 598 matching company records, 6,497 tracked contacts and 1,066 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 2, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 transformer oil testing services worldwide. Snapshot: November 2, 2026. https://revenuebase.ai/companies/browse/transformer-oil-testing-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 transformer oil testing services worldwide
RevenueBase records 598 matching company records for transformer oil testing services worldwide, with 6,497 tracked contacts and 1,066 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 2, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 transformer oil testing services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Voltamp Transformers Limitedvoltamptransformers.com HQ: Vadodara, IndiaReported employees: 501-1,000 | Vadodara, India | 501-1,000 | Exact match | 508 contacts → |
“Voltamp Transformers Limited is a Oil filled Power, Distribution and Dry type Transformer manufacturing company based in Vadodara, Gujarat State in India since year 1967.The…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Voltran Transformadores - Grupo WEGvoltran.com.mx HQ: Tizayuca, MexicoReported employees: 1,001-5,000 | Tizayuca, Mexico | 1,001-5,000 | Exact match | 301 contacts → |
“En VOLTRAN, nuestros equipos de Ingenieros y Técnicos, trabajan bajo los estándares más estrictos de calidad para diseñar, fabricar, reparar y poner en operación transformadores…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Sdmyerssdmyers.com HQ: Tallmadge, OH, United StatesReported employees: 201-500 | Tallmadge, OH, United States | 201-500 | Exact match | 219 contacts → |
“SDMyers is the industry leader in transformer and substation maintenance and electric power system reliability.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HD Hyundai Power Transformers Usa, INChhiamerica.com HQ: Montgomery, AL, United StatesReported employees: 201-500 | Montgomery, AL, United States | 201-500 | Exact match | 212 contacts → |
“HD Hyundai Power Transformers USA, Inc, a subsidiary of HD Hyundai Electric Systems, stands as a premier transformer manufacturer located in Montgomery, Alabama.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | FYR Ingenieros Ltdafyringenieros.com HQ: Bogota, ColombiaReported employees: 201-500 | Bogota, Colombia | 201-500 | Exact match | 161 contacts → |
“FYR INGENIEROS es una empresa dedicada a la Fabricación de Transformadores Tipo Secos clase H, contamos con Laboratorios de Análisis de Aceites Dieléctricos, y de Ensayos…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Emerald Transformeremeraldtransformer.com HQ: Mckinney, AZ, United StatesReported employees: 201-500 | Mckinney, AZ, United States | 201-500 | Exact match | 142 contacts → |
“Emerald Transformer is the premier national single-source solution for oil-filled electrical equipment with services including repair, re-manufacturing, field technical services…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Baur Gmbhbaur.eu HQ: Sulz, FranceReported employees: 51-200 | Sulz, France | 51-200 | Exact match | 113 contacts → |
“BAUR is the world market leader of testing and measurement technology.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Revive Electrical Transformersret.co.za HQ: Meyerton, South AfricaReported employees: 201-500 | Meyerton, South Africa | 201-500 | Exact match | 107 contacts → |
“Revive Electrical Transformers (Pty) Ltd was established in 1997 and has grown to be one of the largest transformer distribution manufacturers in Africa.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Lubrisider Chile S.Alubrisider.cl HQ: Santiago, ChileReported employees: 51-200 | Santiago, Chile | 51-200 | Exact match | 90 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Pt. Petrolab Servicespetrolab.co.id HQ: IndonesiaReported employees: 51-200 | Indonesia | 51-200 | Exact match | 82 contacts → |
“Services Laboratory for - Oil Analysis - Mineral and Natural (Bio) Fuel - Grease - Industrial Hygiene Parameters - Environmental Parameters - Bio Monitoring - Transformer Oil…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Esennar Transformersesennar.com HQ: Hyderabad, IndiaReported employees: 201-500 | Hyderabad, India | 201-500 | Exact match | 80 contacts → |
“ESENNAR is one of the reputed Transformer manufacturers in India, with a comprehensive World class design and manufacturing facility in Hyderabad.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Morgan Schaffer Ltéemorganschaffer.com HQ: Lasalle, QC, CanadaReported employees: 51-200 | Lasalle, QC, Canada | 51-200 | Exact match | 74 contacts → |
“Morgan Schaffer est un leader dans l’analyse de l’huile diélectrique et en instrumentation d’analyse de gaz dissouts (AGD), et ce depuis plus de 50 ans.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Texas Oiltech Laboratoriestol-lp.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 70 contacts → |
“Texas OilTech Laboratories, is committed to remaining a world-class petroleum testing laboratory for the analysis of fuels, lubricants, petrochemical, and environmental materials.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Eurogulf Transformer FZEeurogulftransformers.com HQ: Sharjah, United Arab EmiratesReported employees: 51-200 | Sharjah, United Arab Emirates | 51-200 | Exact match | 62 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | T.E. Laboratories Tellabtellab.ie HQ: Tullow, IrelandReported employees: 51-200 | Tullow, Ireland | 51-200 | Exact match | 57 contacts → |
“For over 30 years, TelLab has been at the forefront of chemistry, research and innovation in Ireland, delivering expert solutions across a diverse range of scientific fields.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Stark Internationalstarkoil.com HQ: New Glasgow, NS, CanadaReported employees: 51-200 | New Glasgow, NS, Canada | 51-200 | Exact match | 55 contacts → |
“STARK International is an industry leader in providing oil services for transformers, hydraulic and lubrication oils.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Surplec, An IPS Companysurplec.com HQ: Sherbrooke, ON, CanadaReported employees: 51-200 | Sherbrooke, ON, Canada | 51-200 | Exact match | 55 contacts → |
“Surplec offers a centralized service for the sale, purchase, repair, rental, and testing of medium- and high-voltage transformers and equipment.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Specialtrasfo S.P.Aspecialtrasfo.com HQ: Agrate Brianza, ItalyReported employees: 51-200 | Agrate Brianza, Italy | 51-200 | Exact match | 52 contacts → |
“Specialtrasfo engineers and manufactures custom designed oil immersed special transformers for industrial and power applications.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | TJ H2b Analytical Servicestjh2b.com HQ: Sacramento, United StatesReported employees: 51-200 | Sacramento, United States | 51-200 | Exact match | 52 contacts → |
“TJ|H2b Analytical Services is a full service laboratory that offers analytical testing and diagnostic evaluation of oil and gas insulated electrical equipment at our global lab…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Monitramonitra.co.uk HQ: Manchester, United KingdomReported employees: 51-200 | Manchester, United Kingdom | 51-200 | Exact match | 50 contacts → |
“Monitra (formerly HVPD) are experts in the field of Partial Discharge (PD) testing and monitoring of Medium Voltage and High Voltage electrical equipment, which can be performed…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | SEA Marconiseamarconi.com HQ: Collegno, ItalyReported employees: 51-200 | Collegno, Italy | 51-200 | Exact match | 47 contacts → |
“Sea Marconi is a global leader in transformer lifecycle management with insulating fluids, delivering sustainable and innovative solutions.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | LG Servis SASlgservis.net HQ: Bogotá Dc, ColombiaReported employees: 11-50 | Bogotá Dc, Colombia | 11-50 | Exact match | 43 contacts → |
“En LG SERVIS S.A.S.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Brastrafo DO Brasil Ltdabrastrafo.com.br HQ: Monte Mor, BrazilReported employees: 51-200 | Monte Mor, Brazil | 51-200 | Exact match | 43 contacts → |
“Fundada em 01/07/1997, a Brastrafo do Brasil é uma empresa nacional que nasceu com o propósito de atender o setor elétrico, em todos os seus segmentos (geração, transmissão…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Product Quality Management, LLCprodqual.com HQ: Pasadena, TX, United StatesReported employees: 51-200 | Pasadena, TX, United States | 51-200 | Exact match | 38 contacts → |
“At PQM we provide oil/fuel testing, inspection and consulting services in the U.S.” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | OLAola-us.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 37 contacts → |
“Oilfield Labs of America is an analytical laboratory network with a business goal and mission of providing the highest quality analytical testing in the fastest time possible to…” Recorded description excerpt · November 2, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Transformer oil testing services: dataset insights
November 2, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
585 records in the displayed employee bands.
13 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 598 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 2, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Transformer oil testing services by location
2 lists · largest firstEvery Transformer oil testing services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for transformer oil testing services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many transformer oil testing services did RevenueBase find worldwide?
The saved snapshot records 598 matching company records, 6,497 tracked contacts and 1,066 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 2, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 transformer oil testing services worldwide. Snapshot: November 2, 2026. https://revenuebase.ai/companies/browse/transformer-oil-testing-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗